LEASES (Tables)

12 Months Ended

Dec. 31, 2019

LEASES [Abstract]

Schedule of Lease Assets and Liabilities, Weighted-Average Lease Term and Discount Rate

in thousands	Classification on the Balance Sheet	2019
Assets
Operating lease right-of-use assets		$     441,656
Accumulated amortization		(33,467)
Total lease assets	Operating lease right-of-use assets, net	$     408,189
Liabilities
Current
Operating	Other current liabilities	$       29,971
Noncurrent
Operating	Operating lease liabilities	388,042
Total lease liabilities		$     418,013
Lease Term and Discount Rate
Weighted-average remaining lease term (years)
Operating leases		9.9
Weighted-average discount rate
Operating leases		4.3%

Components of Nonmineral Lease Expense

in thousands	2019
Lease Cost
Operating lease cost	$       56,546
Short-term lease cost 1	35,487
Variable lease cost	13,739
Sublease income	(3,108)
Total lease cost	$     102,664

¹ We have elected to recognize the cost of leases with an initial term of one month or less within our short-term lease cost.

Maturity Analysis on an Undiscounted Basis

	Operating
in thousands	Leases
Maturity of Lease Liabilities
2020	$       49,767
2021	46,100
2022	41,957
2023	37,276
2024	34,073
Thereafter	576,200
Total minimum lease payments	$     785,373
Less: Lease payments representing interest	367,360
Present value of future minimum lease payments	$     418,013
Less: Current obligations under leases	29,971
Long-term lease obligations	$     388,042

Future Minimum Operating Lease Payments

in thousands
Future Minimum Operating Lease Payments
2019	$       47,979
2020	43,540
2021	35,732
2022	27,463
2023	19,707
Thereafter	195,104
Total	$     369,525